```html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>BilldDesk - 开源跨平台远程桌面控制工具</title>
    <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/6.4.0/css/all.min.css">
    <link rel="stylesheet" href="https://cdn.staticfile.org/tailwindcss/2.2.19/tailwind.min.css">
    <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/mermaid@latest/dist/mermaid.min.js"></script>
    <style>
        body {
            font-family: 'Noto Sans SC', Tahoma, Arial, Roboto, "Droid Sans", "Helvetica Neue", "Droid Sans Fallback", "Heiti SC", "Hiragino Sans GB", Simsun, sans-serif;
            color: #2d3748;
            background-color: #f8fafc;
        }
        h1, h2, h3, h4 {
            font-family: 'Noto Serif SC', serif;
            font-weight: 600;
        }
        .hero-gradient {
            background: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        .platform-icon {
            transition: all 0.3s ease;
        }
        .platform-icon:hover {
            transform: scale(1.1);
        }
        .cta-button {
            transition: all 0.3s ease;
            box-shadow: 0 4px 6px rgba(79, 70, 229, 0.3);
        }
        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 15px rgba(79, 70, 229, 0.4);
        }
        .highlight-text {
            background: linear-gradient(90deg, #3b82f6 0%, #8b5cf6 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .drop-cap:first-letter {
            float: left;
            font-size: 4.5rem;
            line-height: 0.65;
            margin: 0.1em 0.2em 0.1em 0;
            color: #4f46e5;
        }
    </style>
</head>
<body class="antialiased">
    <!-- Hero Section -->
    <section class="hero-gradient text-white py-20 px-4 md:py-32">
        <div class="max-w-6xl mx-auto">
            <div class="flex flex-col md:flex-row items-center">
                <div class="md:w-1/2 mb-10 md:mb-0">
                    <h1 class="text-4xl md:text-5xl lg:text-6xl font-bold leading-tight mb-6">
                        自由掌控 <span class="highlight-text">远程桌面</span> 体验
                    </h1>
                    <p class="text-xl md:text-2xl text-blue-100 mb-8 max-w-lg">
                        BilldDesk - 开源跨平台远程控制解决方案，基于WebRTC技术，为您带来低延迟的远程协作体验。
                    </p>
                    <div class="flex flex-col sm:flex-row space-y-4 sm:space-y-0 sm:space-x-4">
                        <a href="https://desk.hsslive.cn/" target="_blank" class="cta-button bg-white text-indigo-600 font-bold py-3 px-8 rounded-lg text-lg inline-flex items-center justify-center">
                            <i class="fas fa-external-link-alt mr-2"></i> 立即体验
                        </a>
                        <a href="https://github.com/galaxy-s10/billd-desktop" target="_blank" class="cta-button bg-indigo-800 bg-opacity-70 text-white font-bold py-3 px-8 rounded-lg text-lg inline-flex items-center justify-center hover:bg-opacity-90">
                            <i class="fab fa-github mr-2"></i> GitHub项目
                        </a>
                    </div>
                </div>
                <div class="md:w-1/2 flex justify-center">
                    <div class="relative w-full max-w-md">
                        <div class="absolute -top-6 -left-6 w-full h-full border-2 border-indigo-300 border-opacity-50 rounded-xl"></div>
                        <img src="https://cdn.nlark.com/yuque/0/2025/png/21449790/1749882696755-3bc7322c-9979-4191-9b00-2478f0c3c130.png" 
                             alt="BilldDesk远程控制演示" 
                             class="relative rounded-xl shadow-2xl border border-gray-200"
                             style="box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);">
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- Features Section -->
    <section class="py-20 px-4 bg-white">
        <div class="max-w-6xl mx-auto">
            <div class="text-center mb-16">
                <h2 class="text-3xl md:text-4xl font-bold mb-4">强大功能 <span class="highlight-text">无缝连接</span></h2>
                <p class="text-lg text-gray-600 max-w-2xl mx-auto">
                    BilldDesk提供了一系列强大的远程控制功能，满足您的各种需求
                </p>
            </div>
            
            <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg border border-gray-100 transition-all duration-300">
                    <div class="text-indigo-500 text-4xl mb-6">
                        <i class="fas fa-desktop"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">远程桌面控制</h3>
                    <p class="text-gray-600">
                        通过WebRTC技术实现低延迟屏幕共享和远程操作，支持多平台设备间的无缝连接。
                    </p>
                </div>
                
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg border border-gray-100 transition-all duration-300">
                    <div class="text-indigo-500 text-4xl mb-6">
                        <i class="fas fa-file-export"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">文件传输</h3>
                    <p class="text-gray-600">
                        快速安全的跨设备文件传输功能，支持大文件传输，提高工作效率。
                    </p>
                </div>
                
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg border border-gray-100 transition-all duration-300">
                    <div class="text-indigo-500 text-4xl mb-6">
                        <i class="fas fa-globe"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Web端操作</h3>
                    <p class="text-gray-600">
                        无需安装客户端，通过Chrome等现代浏览器即可直接使用，降低使用门槛。
                    </p>
                </div>
                
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg border border-gray-100 transition-all duration-300">
                    <div class="text-indigo-500 text-4xl mb-6">
                        <i class="fas fa-code-branch"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">开源可定制</h3>
                    <p class="text-gray-600">
                        MIT许可证开源，支持商用和二次开发，满足个性化需求。
                    </p>
                </div>
                
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg border border-gray-100 transition-all duration-300">
                    <div class="text-indigo-500 text-4xl mb-6">
                        <i class="fas fa-mobile-alt"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">移动设备支持</h3>
                    <p class="text-gray-600">
                        支持在手机上控制电脑，或将手机作为监控设备使用，灵活多样。
                    </p>
                </div>
                
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg border border-gray-100 transition-all duration-300">
                    <div class="text-indigo-500 text-4xl mb-6">
                        <i class="fas fa-camera"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">摄像头共享</h3>
                    <p class="text-gray-600">
                        支持查看远程设备摄像头画面，可作为临时监控解决方案。
                    </p>
                </div>
            </div>
        </div>
    </section>

    <!-- Platform Support -->
    <section class="py-20 px-4 bg-gray-50">
        <div class="max-w-6xl mx-auto">
            <div class="text-center mb-16">
                <h2 class="text-3xl md:text-4xl font-bold mb-4">全面支持 <span class="highlight-text">多平台</span></h2>
                <p class="text-lg text-gray-600 max-w-2xl mx-auto">
                    BilldDesk兼容主流操作系统，满足您跨设备远程控制的需求
                </p>
            </div>
            
            <div class="flex flex-wrap justify-center gap-8 md:gap-12">
                <div class="platform-icon flex flex-col items-center">
                    <div class="w-20 h-20 bg-white rounded-full shadow-md flex items-center justify-center mb-3">
                        <i class="fab fa-windows text-4xl text-blue-500"></i>
                    </div>
                    <span class="font-medium">Windows</span>
                </div>
                
                <div class="platform-icon flex flex-col items-center">
                    <div class="w-20 h-20 bg-white rounded-full shadow-md flex items-center justify-center mb-3">
                        <i class="fab fa-apple text-4xl text-gray-700"></i>
                    </div>
                    <span class="font-medium">macOS</span>
                </div>
                
                <div class="platform-icon flex flex-col items-center">
                    <div class="w-20 h-20 bg-white rounded-full shadow-md flex items-center justify-center mb-3">
                        <i class="fab fa-linux text-4xl text-black"></i>
                    </div>
                    <span class="font-medium">Linux</span>
                </div>
                
                <div class="platform-icon flex flex-col items-center">
                    <div class="w-20 h-20 bg-white rounded-full shadow-md flex items-center justify-center mb-3">
                        <i class="fab fa-android text-4xl text-green-500"></i>
                    </div>
                    <span class="font-medium">Android</span>
                </div>
                
                <div class="platform-icon flex flex-col items-center">
                    <div class="w-20 h-20 bg-white rounded-full shadow-md flex items-center justify-center mb-3">
                        <i class="fab fa-apple text-4xl text-gray-400"></i>
                    </div>
                    <span class="font-medium">iOS</span>
                </div>
            </div>
        </div>
    </section>

    <!-- Use Cases -->
    <section class="py-20 px-4 bg-white">
        <div class="max-w-6xl mx-auto">
            <div class="text-center mb-16">
                <h2 class="text-3xl md:text-4xl font-bold mb-4">适用 <span class="highlight-text">场景</span></h2>
                <p class="text-lg text-gray-600 max-w-2xl mx-auto">
                    BilldDesk适用于多种远程工作和协作场景
                </p>
            </div>
            
            <div class="grid grid-cols-1 md:grid-cols-2 gap-8">
                <div class="bg-indigo-50 p-8 rounded-xl">
                    <div class="flex items-start mb-6">
                        <div class="bg-indigo-100 p-3 rounded-full mr-4">
                            <i class="fas fa-headset text-indigo-600 text-xl"></i>
                        </div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">远程技术支持</h3>
                            <p class="text-gray-700">
                                IT人员可远程修复客户设备，省去现场支持成本。为家人或客户提供远程帮助变得简单便捷。
                            </p>
                        </div>
                    </div>
                    <img src="https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-1.2.1&auto=format&fit=crop&w=600&q=80" 
                         alt="远程技术支持" 
                         class="rounded-lg w-full h-48 object-cover">
                </div>
                
                <div class="bg-blue-50 p-8 rounded-xl">
                    <div class="flex items-start mb-6">
                        <div class="bg-blue-100 p-3 rounded-full mr-4">
                            <i class="fas fa-briefcase text-blue-600 text-xl"></i>
                        </div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">移动办公</h3>
                            <p class="text-gray-700">
                                在手机上控制办公室电脑，随时处理紧急任务。出差或在家办公不再受限。
                            </p>
                        </div>
                    </div>
                    <img src="https://images.unsplash.com/photo-1516321318423-f06f85e504b3?ixlib=rb-1.2.1&auto=format&fit=crop&w=600&q=80" 
                         alt="移动办公" 
                         class="rounded-lg w-full h-48 object-cover">
                </div>
                
                <div class="bg-purple-50 p-8 rounded-xl">
                    <div class="flex items-start mb-6">
                        <div class="bg-purple-100 p-3 rounded-full mr-4">
                            <i class="fas fa-code text-purple-600 text-xl"></i>
                        </div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">开发测试</h3>
                            <p class="text-gray-700">
                                开发者通过Web端测试不同设备上的应用，提高测试效率和覆盖范围。
                            </p>
                        </div>
                    </div>
                    <img src="https://images.unsplash.com/photo-1555066931-4365d14bab8c?ixlib=rb-1.2.1&auto=format&fit=crop&w=600&q=80" 
                         alt="开发测试" 
                         class="rounded-lg w-full h-48 object-cover">
                </div>
                
                <div class="bg-green-50 p-8 rounded-xl">
                    <div class="flex items-start mb-6">
                        <div class="bg-green-100 p-3 rounded-full mr-4">
                            <i class="fas fa-video text-green-600 text-xl"></i>
                        </div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">临时监控</h3>
                            <p class="text-gray-700">
                                通过摄像头共享功能，将设备变成临时监控系统，查看远程环境。
                            </p>
                        </div>
                    </div>
                    <img src="https://images.unsplash.com/photo-1563986768609-322da13575f3?ixlib=rb-1.2.1&auto=format&fit=crop&w=600&q=80" 
                         alt="临时监控" 
                         class="rounded-lg w-full h-48 object-cover">
                </div>
            </div>
        </div>
    </section>

    <!-- Comparison Section -->
    <section class="py-20 px-4 bg-gray-50">
        <div class="max-w-6xl mx-auto">
            <div class="text-center mb-16">
                <h2 class="text-3xl md:text-4xl font-bold mb-4">为什么选择 <span class="highlight-text">BilldDesk</span></h2>
                <p class="text-lg text-gray-600 max-w-2xl mx-auto">
                    与同类产品相比，BilldDesk具有独特优势
                </p>
            </div>
            
            <div class="overflow-x-auto">
                <table class="w-full bg-white rounded-xl shadow-sm overflow-hidden">
                    <thead class="bg-indigo-600 text-white">
                        <tr>
                            <th class="py-4 px-6 text-left">功能</th>
                            <th class="py-4 px-6 text-center">BilldDesk</th>
                            <th class="py-4 px-6 text-center">TeamViewer</th>
                            <th class="py-4 px-6 text-center">ToDesk</th>
                        </tr>
                    </thead>
                    <tbody class="divide-y divide-gray-200">
                        <tr>
                            <td class="py-4 px-6 font-medium">价格</td>
                            <td class="py-4 px-6 text-center text-green-600 font-bold">
                                <i class="fas fa-check-circle mr-1"></i> 完全免费
                            </td>
                            <td class="py-4 px-6 text-center text-gray-600">商业用途需付费</td>
                            <td class="py-4 px-6 text-center text-gray-600">高级功能收费</td>
                        </tr>
                        <tr class="bg-gray-50">
                            <td class="py-4 px-6 font-medium">开源</td>
                            <td class="py-4 px-6 text-center text-green-600 font-bold">
                                <i class="fas fa-check-circle mr-1"></i> MIT许可证
                            </td>
                            <td class="py-4 px-6 text-center text-gray-600">闭源</td>
                            <td class="py-4 px-6 text-center text-gray-600">闭源</td>
                        </tr>
                        <tr>
                            <td class="py-4 px-6 font-medium">Web端支持</td>
                            <td class="py-4 px-6 text-center text-green-600 font-bold">
                                <i class="fas fa-check-circle mr-1"></i> 完整支持
                            </td>
                            <td class="py-4 px-6 text-center text-gray-600">有限支持</td>
                            <td class="py-4 px-6 text-center text-gray-600">有限支持</td>
                        </tr>
                        <tr class="bg-gray-50">
                            <td class="py-4 px-6 font-medium">文件传输</td>
                            <td class="py-4 px-6 text-center text-green-600 font-bold">
                                <i class="fas fa-check-circle mr-1"></i> 支持
                            </td>
                            <td class="py-4 px-6 text-center text-green-600">
                                <i class="fas fa-check-circle mr-1"></i> 支持
                            </td>
                            <td class="py-4 px-6 text-center text-green-600">
                                <i class="fas fa-check-circle mr-1"></i> 支持
                            </td>
                        </tr>
                        <tr>
                            <td class="py-4 px-6 font-medium">跨平台</td>
                            <td class="py-4 px-6 text-center text-green-600 font-bold">
                                <i class="fas fa-check-circle mr-1"></i> 全平台
                            </td>
                            <td class="py-4 px-6 text-center text-green-600">
                                <i class="fas fa-check-circle mr-1"></i> 全平台
                            </td>
                            <td class="py-4 px-6 text-center text-green-600">
                                <i class="fas fa-check-circle mr-1"></i> 全平台
                            </td>
                        </tr>
                    </tbody>
                </table>
            </div>
        </div>
    </section>

    <!-- Getting Started -->
    <section class="py-20 px-4 bg-white">
        <div class="max-w-6xl mx-auto">
            <div class="text-center mb-16">
                <h2 class="text-3xl md:text-4xl font-bold mb-4">快速 <span class="highlight-text">上手</span></h2>
                <p class="text-lg text-gray-600 max-w-2xl mx-auto">
                    四步轻松开启远程控制体验
                </p>
            </div>
            
            <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-8">
                <div class="flex flex-col items-center text-center">
                    <div class="w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-xl font-bold mb-4">1</div>
                    <h3 class="text-xl font-bold mb-2">访问官网</h3>
                    <p class="text-gray-600">
                        访问 <a href="https://desk.hsslive.cn/" target="_blank" class="text-indigo-600 hover:underline">desk.hsslive.cn</a> 或下载客户端
                    </p>
                </div>
                
                <div class="flex flex-col items-center text-center">
                    <div class="w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-xl font-bold mb-4">2</div>
                    <h3 class="text-xl font-bold mb-2">选择使用方式</h3>
                    <p class="text-gray-600">
                        选择Web端或安装客户端，启动程序
                    </p>
                </div>
                
                <div class="flex flex-col items-center text-center">
                    <div class="w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-xl font-bold mb-4">3</div>
                    <h3 class="text-xl font-bold mb-2">建立连接</h3>
                    <p class="text-gray-600">
                        输入目标设备ID和密码，点击连接
                    </p>
                </div>
                
                <div class="flex flex-col items-center text-center">
                    <div class="w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-xl font-bold mb-4">4</div>
                    <h3 class="text-xl font-bold mb-2">开始控制</h3>
                    <p class="text-gray-600">
                        按界面提示授权，开始远程控制
                    </p>
                </div>
            </div>
        </div>
    </section>

    <!-- Architecture Diagram -->
    <section class="py-20 px-4 bg-gray-50">
        <div class="max-w-6xl mx-auto">
            <div class="text-center mb-16">
                <h2 class="text-3xl md:text-4xl font-bold mb-4">技术 <span class="highlight-text">架构</span></h2>
                <p class="text-lg text-gray-600 max-w-2xl mx-auto">
                    BilldDesk基于现代Web技术构建，提供高效稳定的远程控制体验
                </p>
            </div>
            
            <div class="bg-white p-8 rounded-xl shadow-sm">
                <div class="mermaid">
                    graph TD
                    A[用户设备] -->|WebRTC| B[BilldDesk服务]
                    B --> C[远程设备]
                    A -->|文件传输| C
                    A -->|屏幕共享| C
                    A -->|摄像头访问| C
                    C -->|控制输入| A
                    
                    subgraph 技术栈
                    D[Vue3] --> E[WebRTC]
                    E --> F[Node.js]
                    F --> G[Electron]
                    end
                </div>
            </div>
        </div>
    </section>

    <!-- Final CTA -->
    <section class="py-20 px-4 hero-gradient">
        <div class="max-w-4xl mx-auto text-center">
            <h2 class="text-3xl md:text-4xl font-bold text-white mb-6">立即体验 <span class="highlight-text">免费开源</span> 的远程控制工具</h2>
            <p class="text-xl text-blue-100 mb-8">
                无需注册，无功能限制，即刻开启高效远程协作
            </p>
            <a href="https://desk.hsslive.cn/" target="_blank" class="cta-button inline-block bg-white text-indigo-600 font-bold py-4 px-12 rounded-lg text-lg hover:bg-gray-100">
                <i class="fas fa-rocket mr-2"></i> 开始使用
            </a>
        </div>
    </section>

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</body>
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```